Fixed compile error when compiling without sound support.

git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@2081 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba

src/common/SoundNull.cxx

@@ -57,7 +57,7 @@ bool SoundNull::load(Serializer& in)
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-bool SoundNull::save(Serializer& out)
+bool SoundNull::save(Serializer& out) const
 {
   out.putString("TIASound");
 

src/common/SoundNull.hxx

@@ -136,6 +136,14 @@ class SoundNull : public Sound
     void adjustVolume(Int8 direction) { }
 
 public:
+    /**
+      Saves the current state of this device to the given Serializer.
+
+      @param out The serializer device to save to.
+      @return The result of the save.  True on success, false on failure.
+    */
+    bool save(Serializer& out) const;
+
     /**
       Loads the current state of this device from the given Serializer.
 
@@ -145,12 +153,11 @@ public:
     bool load(Serializer& in);
 
     /**
-      Saves the current state of this device to the given Serializer.
+      Get a descriptor for this console class (used in error checking).
 
-      @param out The serializer device to save to.
-      @return The result of the save.  True on success, false on failure.
+      @return The name of the object
     */
-    bool save(Serializer& out);
+    string name() const { return "TIASound"; }
 };
 
 #endif